xref: /OK3568_Linux_fs/kernel/tools/io_uring/barrier.h (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1 #ifndef LIBURING_BARRIER_H
2 #define LIBURING_BARRIER_H
3 
4 #if defined(__x86_64) || defined(__i386__)
5 #define read_barrier()	__asm__ __volatile__("":::"memory")
6 #define write_barrier()	__asm__ __volatile__("":::"memory")
7 #else
8 /*
9  * Add arch appropriate definitions. Be safe and use full barriers for
10  * archs we don't have support for.
11  */
12 #define read_barrier()	__sync_synchronize()
13 #define write_barrier()	__sync_synchronize()
14 #endif
15 
16 #endif
17